Machine for making core-yarns.



W. A. HEATHCOCK.

MACHINE FOR MAKING'CORE YARNS.

APPLICATION FILED MAY26. 1916.

3 SHEETS-SHEET I.

A TTORNEY.

Patented D00. 3, 1918/ W. A. HEATHCUCK. I

MACHINE FOR MAKING CORE YARNS.

ARPLICATION FILED MAY26, 1915 1 26 311 7 Patented B903, 1918.

v EET 2- INV ENTOR. %M; a W

v %dh\ ATTORNEY.

W I TNESS:

WITNESS:

W. A; HEATHCOCK.

MACHINE FOR MAKING-CORE YARNS.

APPLICATION FILED MAY 26, I916.

latnted Dec. 3, 1918.

3 SHEETS-SHEET 3.

A TTORNE Y.

WILLIAM A. HEATHCOCK, 0F LOWELL, MASSACHUSETTS.

MACHINE FOR MING CQRE-YARNS.

Specification or Letters Patent.

atented net. a, rat,

Application filed May 26, 1916. Serial No. 100,119.

machine for carrying out my process of mak ing such yarns.

A core yarn comprises a core which usually consists. of a spun ortwisted, substantially finished yarn of smaller size than'the completecore yarn, and arelatively thick cover or exterior which'more or lessenvelops the core. Where the cover is relativelythin, it is sometimescalled a covered yarn.

The exterior has been made of undrawn,

untwi-sted fiber such as the film from a card,-

- it has been made of sliver, of spun or twisted yarn, and of a ribbonof filaments, such as of silk or artificial silk. v The exterior may-betwined or wound around the core in which case it will be of greaterlength than the core. They may be .twisted together in which case theyare.

the core, to a' great degree, sinks in .out of v sight, it shows inspots and of course is not in the axial center of the finished yarn. Toclearly understand my invention, it is necessaryto have clearly in mindthe meaning of the terms used, and I therefore now state that the lap orsheet of fiber which is fedto a card, emerges as a film. This film, ason a woolen card, may be divided into roping or'sliver, or it may,without being divided, be condensed into a sliver. case, the sliver hasno twist, its fibers are not parallel, and it is uneven. This sliver is'doubled and drawn an finally given a slight twist by suitable machinerywhen it becomes slubbing and roving. Roving is more even and its fibersare more parallel than is the case with a film, or sliver.

Such roving may be twisted into yarn without further drawing, or it maybe'spun on suitable spinning-machinery whereby it is drawn out and thenrevolved about its longitudinal axis to form spun yarn.

a use as an exterior, a fiber which is so short In either The'principalpurposes of my invention are to utilize well known machines Withoutcomplicatedattachments, and their products, to produce, by unskilledlabor,- as cheaply as possible, a stronger core yarn which is uni-;formly even, in which the core is at the axial center and is notspiraled, and in which the exterior and core are so spun together thateach helps to strengthen the other.

With my inventlon, T can use unskilled labox, and economize floor spaceby" using compact machines, such as ring spinning frames of highrelative production.

Another purpose of my invention is to r that as a sliver or roving, it,will not support its own weight. except when in very short lengths orof very large size. It is especially useful for short'china cotton, butI may use a fiber of long staple such as cotton, wool, jute or othersimilar material.

l[ have discovered that where the film or sliver from a card is rubbedonto a core, so as to surround it, and the product is wound onto aspool, the core will separate from its coveringin spots-and will alsocut into the inside coils so that it will not unwind.

T have also discovered that if the cover and core are run together anydistance without or before they are revolved, they will sep-.

arate and the resulting yarn will beuneven,

but that if the cover consists of roving which is flattened out bypressure devices, preferably rolls, and the core yarn is so guided as toengage it at a substantially laterally central position in the outsideof the roving as both pass through such devices, the core is forced intothe cover and if both are at once revolved as they leave such devices, aspun core yarn of the character described is produced. .1

In such core yarn,- the roving is wrapped. or spun around the-core, nottwisted nor wound thereon, and-the whole mass is so homogeneous, that itall breaks together instead of the core breaking' first when put under astrain. F v 1 With my invention, ll use roving which has been doubledand drawn to inake it even and its fibers parallel. This is wound asusual upon bobbins, which are revolubly mounted. ina creel so as to beunwound by/ the pull of the roving as it passes through the drawingrolls. I prefer to pass this rov ing through a plurality of sets ofdrawing rolls, the speed of which can be varied, whereby the amount ofcover can be regulated.

traversing type, and of-the special form suitable guiding devices. A

I use a guide or guides, preferably of the shown, to so guide the yarnas to unite it with, preferably the center of, the roving as it entersbetween the delivery'rolls, and as a means for revolving the yarn androving as they leave the delivery rolls, I use the well known ring andtraveler of the ring spinning frame.

I can .use my invention with a ring spinning frame as described, with aroving frame, intermediate, fly frame or a cotton mule, or with. anyspinning machine as distinguished from a twister, by employing In thedrawings 1 show my invention ap plied to a well knownform of ringspinning frame. 7

'fview of part of-a ring spinning frame show- -In the drawings Figure'lis an elevation showing part of a ring spinning frame from the side.Fig. 2 is a sectional side elevation showing the details of the drawingrolls and adjacent parts, together with one form of traversing guide..Fig. 3 is a back elevation ofsuchguide. Fig. yis aside elevation ofanother form of guide. f Fig. 5 is a front ing the roving from thebobbins, yarn spools, and spindles. Fig. .6 is'a front elevation of partof a ring spinning frame -A representsa two storied creel upon the upperpart of which are mounted the rovbobbins 10 in staggered relation infawell known manner, whereby .each is myolub le by the pull of its rovingas 11, which,"

showing'the-guide eyes, drawing rolls and spindles in the relation inwhich they are on, some types of machines. Y

" passes vover a guide .rail 12 thence dowm through-traversing guideB,and through thedrawling rolls 20, 21, 22, 23, -24, 25,.jasi" will bedescribed, InFigs-l, 2 and 4" t he roving from one spool only isshown'jfor the s'ake of clearness, Q i I also mount on the lower uidqrail 32,- and. thencefpas'ses" throng one ofjthe'bottom eyes of guideB,"

thence under the lower back and middle drawing rolls and up between thefront drawing rolls as shown.

The drawing rolls are'of the well known type, and may be set in theusual manner in accordance with the amount of draft on the rovingdesired, and the thickness of the cover for the core yarn which iswanted. They are arranged in sets, of which. 2225 are the feed or backrolls; 2124 the intermediate or middle rolls, and 2023 the delivery orfront rolls. These sets of rolls are of successively increasing speed,from the feed to the delivery rolls. The bottom rolls are preferably ofmetal and fluted, While the top rolls are preferably covered withpadding and leather.

The guides B of which, as shown, there is one for each two spindles, arecarried by the traverse bar 34, which moves back and forth from side toside of the frame behind the drawin rolls in a Well known manner, and byw'el known mechanism. Each is shown as having at the top, trumpet guideeyes 35 and 86, each of a size to allow the passage of the undrawnroving, and at the bottom, each directly underneath, a top guide eye,the bottom trumpet guide eyes 37 and 38, each of a size to permit thepassage of the core. yarn from a spool 30.

The roving 11 passesdirectly through all the sets of drawing rolls andis drawn out to the extent desired, while directly underneath it and soguided by an eye, such as 37 M38, the core yarn 31 passes below thebottom, back and middle rolls and joins the flattened out roving,preferably directly at the center thereof, as it enters between thefront or delivery rolls As soon as it emerges, it is revolved by theaction of its spindle 40 and bobbin 41, and is spun andlaid upon thebobbin in the usual manner by the action of the ring 43 and traveler 44.In Fig. sum uide wires 46 are shown as directly in line with, or in thesame plane with the middle oint of. the traverse ofa guide-anda s indie,and for the best .results I prefer suc an arrangement.

, On some frames however, as shown in Fig. 6, on'account of the lengthof the draw-- in}; rolls and their arrangement, the distance betweenad'oining guide eyes, such' as 60 and '61, is less 1; an thatbetween'spindles 62 and 63,- and theguide wires 64'and 65. This has atendency to pull thecore yarn away; from the cover and to counteractthis I may use a" guide such as shown in Fig. 4, which con- I sistsof awire 71' having a loop 72. atthe I I art of creel A, spools: 30, 30 oneach-of w ich is wound, -spulnf'or'twiste'd yarn 31, and each of. whichj-is fsof'fmounted asto'be' rev'oluble'by the pullz "thereof; .J.Theyarn 31 may be guided by end of an arm 73bent upwardly at one end andhavinganother 1 arm 74 bent upwardly at the-other end and fasteneddirectly underneath a roving guide eye-75;. carried by traverse"bar34..With this type of guide, the core yarn may be guidedal-l'nost directlyinto the roving as it enter'sthe delivery rolls, and

inseam i As the roving on spools 10 may be of any desired size, veryshort stock can be used,

and this can be drawn down by the drawing rolls to be ver fine byregulating the speed,

by using smal sized intermediate and delivery rolls, and setting themclosely 'to-' gether. The roving will thus hold together, and its longerfibers will tend to move toward the center, so that as the core yarn isdirectly in the center and both are revolved at once as they leave thedelivery rolls,- a

7 very strong-even yarn is produced, having the core at the center andnext-thereto the long fibers, while the short fibers are on the outside.

It is evident that it makes no difference which way the yarn isrevolved.

I-claim: t s

1. The combination of a bobbin on which roving is adapted to be woundrevoluble by the pull of the roving, with a plurality of sets of drawingrolls of successively increasing speed comprising sets of feed anddelivery rolls through which the roving is adapted to pass, with a spoolon which spun or twisted yarn is adapted to be wound revoluble by thepull thereof, a traversing guide located back of the feedrolls with atop eye for the roving and a bottom eye directly under it for the yarn,to guide the'yarn to unite it with the roving as it enters between thedelivery rolls, and means for revolving the yarn and roving as theyleave the delivery rolls.

2. The combination of a bobbin on which roving is adapted to be woundrevoluble by the pull of the roving, with a plurality of sets of drawingrolls of successively increasing speed comprising sets offeed anddelivery rolls through which the roving is adapted to pass, with a spoolon which spun or twisted yarn is adapted to be wound revoluble by thepull thereof, a traversing guide with a top w eye for the roving and abottom eye directly under it for; the yarn, to guide the yarn to uniteit with the roving as it enters between the delivery rolls, andmeans forrevolving the yarn and roving as they leave the delivery rolls.

3. The combination of a bobbin on which roving is' adapted to be woundrevoluble by Y the pull of the roving, with a plurality of sets ofdrawing rolls of successively increasing speed comprising sets of feedand delivery rolls through which the roving is adapted to pass, with aspool on which spun or twisted yarn is adapted to be wound revoluble bythe pull thereof, a traversing guide located back of the feed rolls witha top eye to uide the roving between the feed v rolls an a bottom eyebelow and in line with it to guide the yarn under the feed rolls so asto unite it with the roving as-it enters between the delivery rolls, oneof which is a cushioned roll, and means for revolving the yarnand-roving as they leave the delivery rolls.

4.-The combination in a spinning frame of one or more bobbins free torevolve on which roving is adapted to be wound, and one or more spoolsfree to revolve on which spun or twisted yarn is adapted to be wound,

with a plurality of sets of drawing rolls of successively increasingspeed comprising sets of feed and delivery rolls through which theroving is adapted to pass, a traversing guide located behind the feedrolls having a top eye for the roving and a bottom eye directly under itfor the yarn, toguide the roving between the feed rolls and to guide theyarn under the feedrolls to unite itwith the roving as it entersbetweenlthe delivery rolls, and means for revolving the yarn and rovingas they leave the delivery rolls.

In testimony whereof I hereto afiix my signature.

WILLIAM A. HEATHCOCK.

